#include <iomanip>
#include <iostream>             
#include <vector>
#include <fstream>
#include <sstream>
#include <cmath>
#include <ctime>

namespace util
{
	int stricmp(char *s, char *t);
	double string_to_double(std::string s);
	int string_to_int(std::string s);
	std::string remove_leading_blanks(std::string string_var);
	std::string string_print_spacer(std::string string_var, unsigned int width_field);
	double great_circle(double dep_lat, double dep_lon, double des_lat, double des_lon);
	std::string all_caps(std::string strvar);
	std::string all_lower(std::string strvar);
	std::string init_cap(std::string strvar);
	std::string replace_comma(std::string strvar);
	std::string date_format(std::string year_str, std::string date_str);
	std::string int_to_string_date_format (int year_int, int date_int);
	std::string int_to_string (int integer);
}